GRB 211024B: An Ultra-long GRB Powered by Magnetar
文献类型：期刊论文
| 作者 | Fu, Shao-Yu5,6; Xu, Dong6; Lei, Wei-Hua4; Postigo, Antonio de Ugarte2,3; Malesani, Daniele B.1,14; Kann, David Alexander12,13; Jakobsson, Pall11; Fynbo, Johan P. U.1,10; Maiorano, Elisabetta9; Rossi, Andrea9 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 977期号:2页码:197 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ad8886 |
| 产权排序 | 14 |
| 英文摘要 | Ultra-long gamma-ray bursts are characterized by exceptionally long-duration central engine activities, with characteristic timescales exceeding 1000 s. We present ground-based optical afterglow observations of the ultra-long gamma-ray burst GRB 211024B, detected by Swift. Its X-ray light curve exhibits a characteristic "internal plateau" with a shallow decay phase lasting approximately similar to 15 ks, followed by a steep decline (alpha drop similar to -7.5). Moreover, the early optical emission predicted by the late r-band optical afterglow is significantly higher than the observed value, indicating an external shock with energy injection. To explain these observations, we propose a magnetar central engine model. The magnetar collapses into a black hole due to spin-down or hyperaccretion, leading to the observed steep break in the X-ray light curve. The afterglow model fitting reveals that the afterglow injection luminosity varies with different assumptions of the circumburst medium density, implying different potential energy sources. For the interstellar medium case with a fixed injection end time, the energy may originate from the magnetar's dipole radiation. However, in other scenarios, relativistic jets produced by the magnetar/black hole system could be the primary energy source. |
| WOS关键词 | GAMMA-RAY BURST ; TIDAL DISRUPTION EVENT ; X-RAY ; LIGHT CURVES ; ELECTROMAGNETIC COUNTERPART ; ENERGY INJECTION ; EARLY AFTERGLOWS ; 2-COMPONENT JET ; CENTRAL ENGINES ; EMISSION |
| 资助项目 | Instituto de Astrofisica de Andalucia (IAA) ; University of Copenhagen ; MINECO/FEDER[AyA2017-84089.7] ; China Manned Space Project[CMS-CSST-2021-A13] ; China Manned Space Project[CMS-CSST-2021-B11] ; National Natural Science Foundation of China[12473012] ; European Research Council (ERC) under the European Union[725246] ; European Union (ERC)[101071865] ; Danish National Research Foundation[DNRF140] ; PRIN-MIUR[20179ZF5KS] ; INAF project Premiale Supporto Arizona Italia |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001375948500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Instituto de Astrofisica de Andalucia (IAA) ; University of Copenhagen ; MINECO/FEDER ; China Manned Space Project ; National Natural Science Foundation of China ; European Research Council (ERC) under the European Union ; European Union (ERC) ; Danish National Research Foundation ; PRIN-MIUR ; INAF project Premiale Supporto Arizona Italia |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7275]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Fu, Shao-Yu; Lei, Wei-Hua |
| 作者单位 | 1.Univ Copenhagen, Niels Bohr Inst, Jagtvej 155, DK-2200 Copenhagen N, Denmark 2.Aix Marseille Univ, CNRS, LAM, Marseille, France 3.Univ Cote Azur, Observ Cote Azur, CNRS, F-06304 Nice, France 4.Huazhong Univ Sci & Technol, Sch Phys, Dept Astron, Wuhan 430074, Peoples R China 5.Univ Chinese Acad Sci, Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Key Lab Space Astron & Technol, Natl Astron Observ, Beijing 100101, Peoples R China 7.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 8.INAF Osservatorio Astron Roma, Via Frascati 33, I-00040 Monte Porzio Catone, Italy 9.INAF Osservatorio Astrofis & Sci Spazio, Via Piero Gobetti 93-3, I-40129 Bologna, Italy 10.Cosm Dawn Ctr DAWN, Lyngby, Denmark |
| 推荐引用方式 GB/T 7714 | Fu, Shao-Yu,Xu, Dong,Lei, Wei-Hua,et al. GRB 211024B: An Ultra-long GRB Powered by Magnetar[J]. ASTROPHYSICAL JOURNAL,2024,977(2):197. |
| APA | Fu, Shao-Yu.,Xu, Dong.,Lei, Wei-Hua.,Postigo, Antonio de Ugarte.,Malesani, Daniele B..,...&Wei, Jian-Yan.(2024).GRB 211024B: An Ultra-long GRB Powered by Magnetar.ASTROPHYSICAL JOURNAL,977(2),197. |
| MLA | Fu, Shao-Yu,et al."GRB 211024B: An Ultra-long GRB Powered by Magnetar".ASTROPHYSICAL JOURNAL 977.2(2024):197. |
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